Aided by nutrition writer Roth, here Whitaker reiterates methods (largely nutritional) for heading off the two diseases he cove red in Reversing Heart Disease and Reversing Diabetes, as well as cancer and other serious illnesses. The authors advocate the use of blood-chemistry test results as a means of alerting yourself to disease risks and gauging progress in improving risk factors. They describe a number of tests--such as those measuring blood sugar, cholesterol, triglycerides, and uric acid--and explain what the results mean and how they can show early warning signals. No pointers are provided on persuading your doctor to tell you all these results. For each of the three major degenerative diseases, Whitaker and Roth then outline specific dietary changes, along with some added vitamin and mineral supplements, that can assist in improving blood-test readings. A regular exercise program is, of course, also advocated. The last half of the book is devoted to a 30-day menu plan and a series of healthful recipes that require devotion to a low-sugar, low-salt, low-fat, low-protein diet. Common-sensical, and nothing new.